Smelting-furnace.



J. KIRBY.

SMELTING FURNACE.

APPLICATION HLED DEC.13,1916- 31 ,222,636 Patented Apr. 17, 191?.

2 SHEETS-SHEET I.

WITNESSEJ' rmmmms FEYERS 00.. mwmuma. wAsumcmu. n. c.

J. KIRBY.

SMELTING FURNACE.

' APPLICATION FILED DEC. 13, I916. Lzfifi fim Patented Apr. 17, 1917.

2 SHEETSSHEET 2.

INVENTOR. m

@722 ZZZ WW 42442 2 zz/ /zz/zr 1m: nunms FEYERS 170., PuOTu-L rmo umsnms you. n. c,

WITNESSES N Tilllfl) V @FFTQE.

JOHN KIRBY, OF LEECHBURG, PENNSYLVANIA, ASSIGNOR 0F ONE-FOURTH TO OWEN KIRIBY, 0F LEECHBURG, PENNSYLVANIA, ONE-FOURTH T0 JAMES: B. SGMMERVILLE, OF WHEELING, WEST'VIRGINIA, AND ON E-FOURTH T0 SAMUEL M. BOYD, OF PITTS- BURGH, PENNSYLVANIA.

SMELTINGr-FURNACE.

Specification of Letters Patent.

Patented Apr. 1?, 1917.

Application filed December 13, 1916. Serial 11' 0. 136,597.

To all whom it may concern."

Be it known that 1, JOHN KIRBY, a citizen of the United States of America, residing at Leechburg, county of Armstrong, and State of Pennsylvania, have invented certain new and useful Improvements in Smelting-Furnaces, of which the following is a specification.

This invention relates to smelting furnaces, of the open hearth type, and has for its object to provide a furnace of such class, with means in a manner as hereinafter set forth, for satisfactorily distributing the heat through the furnace to cause an etlicient smelting of the ore, and to further provide the furnace with means, in a manner as hereinafter set forth, for changing the direction of flow of the heating units when desired.

A further object of the invention is to provide a furnace of the class referred to, with means in a manner as hereinafter set forth, for distributing the heating units below a bed plate carrying the ores to be,

smelted and further for directing the heating units over the ore bed for superheat' ing the same simultaneously with the utilization of the heating units for heating the bed of ore at the bottom thereof.

Further objects of the invention are to provide a furnace of the type referred to which is comparatively simple in its construction and arrangement, strong, durable, convenient and efficient in its use, readily set up and comparatively inexpensive.

WVith the foregoing and other objects in View the invention consists of the novel construction, combination and arrangement of parts, as hereinafter more specifically described and illustrated in the accompanying drawings, wherein is shown an embodiment of the invention, but it is to be understood that changes, variations and modifications can be resorted to which come within the scope of the claims hereunto appended.

In the drawings wherein like reference characters denote corresponding parts throughout the several views Figure 1 is a lon itudinal sectional view taken on line I-I, Fig. 2.

Fig. 2 is a sectional plan taken on line TIII, Fig. 1.

removed from the top wall 6. The top edge of each of said bridge walls 7 is beveled, as at 8. The lower portion of each of said bridge walls is formed with a series of archways 9, which at times constitute flue inlets and at other times flue outlets.

Mounted centrally of the upper face of the bottom 1 is a partition wall 10, which extends from the front wall 3 to the rear wall 2 and is of less height than either of the bridge walls 7. Mounted upon the par tition wall 10 and extending from one bridge wall 7 to the other, is a bed plate 11, and the latter, in connection with the upper portions of the bridge walls 7 and the top wall 6 of the furnace body provides a smelting chamber 12.

Extending from the inner face of each bridge wall 7 to a point removed from the partition wall 10, is a series or set of vertically disposed spaced partitions 18, which. in connection with the bed plate 11, front wall 3 and rear wall 2, form sets of longitudinally extending flues 15 and 13 opening at one end into the archways 9, and at their other ends into transverse flues 1 1, 14 a formed between the inner ends of the partitions 13 and the partition wall 10.

. The bridge walls 7, in connection with the end walls 4, 5, form flues 15, 15, with which the archways 9 communicate.

The combustion chamber of the furnace is arranged forwardly of the flue chambers said structure into a combustion chamber 18 and ash pit 19. The front wall of the structure 16 has a door opening 19 which is closed by a door 20 so that access can be had to the combustion chamber 18. Access can be liad to the ash pit 19 by an opening 21 in the front wall of the structure 16 and which is closed by a door 22.

The front wall 3 of the furnace body has an opening 23 which communicates with the transverse flues 14-, 1 1 whereby the heat units from the chamber 18 will be supplied to the fines 14, 1 1. Communication between the combustion chamber 18 and lines 14%, 14 is controlled by a valve, angle shape in contour, one leg thereof being indicated at 24 and the other leg at The arrange ment and construction of the valve is such that one leg thereof will close the line 14 to the combustion chamber while the other leg is shifted to such a position that communication is established between the combustion chamber 18 and the fine 14, or in other words the fines 11, 14E can alternately communicate with the combustion chamber 18. The valve is arranged at the outer end of the partition wall 10.

- Extending into the combustion chamber 18, above the grate 17, is a gas or oil sup ply pipe 26.

At the rear of the wall 2 a stack 27 is arranged, and communication is established between the stack 27 and the rear of the fine 14;? by an inclined passage 28, and com munication is established between the stack '27 and rear of the flue 141 by an inclined passage 29. The passages 28, 29, are controlled by a damper 30 and which is so arranged that when the damper 30 is in position to close the passage 28, it will be shifted to such a position to open the passage 29, or in other words the damper 30 is employed for alternately establishing communication between the passages 28 and 29 to the fines 14-. and 1 1, or to alternatelyestablish communication between the flue chamber and the stack.

The valve which controls communication between the combustion chamber and the flues 14, 14 is carried by an actuating rod 31, and the damper 30 is carried by a shaft 32. The rod 31 is coupled to the shaft 32 by a chain 33 and the elements are so set up that when the rod 31 is shifted to open the flue 12 or 14 to the combustion chamber 18, the daniper30 will be shifted to close the passage 28 or 29, cutting off communication between the stack and the flue 1st or 1d.

- Any suitable means can be employed for actuating the rod 31, said means extending forwardly of the furnace so convenient access can be had thereto.

Each of the end walls has a normally closed opening or openings 34 so access can be had to clean the flues.

The top 6 is provided with filling openings 35 and the rear wall 2, of the front wall 3 with normally closed openings 36 so that the material can be removed from the smelting chamber.

It will be assumed that the flue 14c" is open to the combustion chamber 18, the heating units pass into the line 14c through the fines 13 into the flue 15 over a bridge wall 7, then across the smelting chamber 12, over the other bridge wall 7, down through the flue 15, into the fines 13 through the flue 1 1 and out through the passage 29 to the stack. If the fine 14. is open to the combustion chamber 18, the heating units pass into the flue 14:, through the fines 13 into the flue 15, over a bridge wall 7 into the smelting chamber 12, over the other bridge wall 7, into the flue 15, through the fines 13*, into the flue 14:, then out through the passage 28 to the stack.

Owing to the manner in which valve and damper are set up relatively to each other the travel of the heating units can be changed when desired.

One set of the partitions 13, in connection with the bridge wall 7, front and rear walls 3, 2, the partition wall 10 and the bed plate 11 form a fine chamber, and the other set of the partitions 13 in connection with the other bridge wall, front and rear walls, partition wall and the bed plate form the other flue chamber.

What I claim is 1. A furnace of the type set forth comprising a body portion, a pair of spaced transverse bridge walls therein, a base plate positioned between said walls and forming in connection therewith a smelting chamber,

a pair of oppositely disposed flue chambers arranged below the smelting chamber and each having a set of longitudinal flues, a stack rearwardly of the smelting chamber, an imperforate transverse partition wall between, spaced from and separating said flue chambers, said partition wall extending from said plate to the bottom of said body portion and forming a pair of transverse flues leading from the flue chambers to the stack, said bridge walls in connection with said body portion forming transverse flues leading to the smelting chamber, said bridge walls having openings to establish communication between said longitudinal fines and the second mentioned transverse fines,

a stack rearwardly of the smelting cham her, an imperforate transverse partition wall between, spaced from and separating said flue chambers, said partition wall extending from said plate to the bottom of said body portion and forming a pair of transverse fines leading from the flue chambers to the stack, said bridge Walls in connection with said body portion forming transverse fines leading to the smelting chamber, said bridge walls having openings to establish commnnioationbetween said longitudinal fines and the second mentioned transverse fines, and a combustion chamber arranged forwardly of the smelting chamber, means at the forward end of said partition Wall for alternately opening one of said fine chambers to and closing the other of said chambers to the combustion chamber, and means for alternately closing the stack to said open fine chamber and opening the stack to said closed fine chamber.

3. A furnace of the type set forth comprising a body portion, a pair of spaced transverse bridge walls arranged therein, a base plate positioned between said walls and forming in connection therewith a smelting chamber, a pair of oppositely disposed fiue chambers arranged below the smelting chamber and each having a set of longitudinal fines, an imperforate transverse partition wall interposed between, spaced from and separating; said flue chambers, said wall extending from said plate to the bottom of the body portion and forming a pair of transverse fines into which open said flue chambers, said bridge walls in connection with said body portion forming transverse flnes leading to the smelting chamber, said bridge walls having openings for establishing communication between the longitudinal fines and the last mentioned transverse fines, a stack adapted to communicate with the first mentioned transverse fines, and a combustion chamber adapted to commnnicate with the first mentioned transverse fines.

In testimony whereof I aiiix my signature in the presence of a witness.

JOHN KIRBY. Witness:

LUELLA H. SIMON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

